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> Characiformes (Characins) > Characidae (Characins; tetras) > Tetragonopterinae
Etymology: Tetragonopterus: Name from Greek words: 'Tetra' meaning four; 'gonia' meaning angle; 'pteron' for fin; referring to the evident tetragonal shape of the body (Ref. 124043); franciscoensis: Named for the Rio São Francisco, where the species is well known and abundant; an adjective.

Environment: milieu / climate zone / depth range / distribution range Ecologia

; acqua dolce demersale. Tropical

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

South America: Brazil.

Size / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 11.7 cm SL maschio/sesso non determinato; (Ref. 130067); peso massimo pubblicato: 55.00 g (Ref. )

Short description Chiavi di identificazione | Morfologia | Morfometria

Raggi dorsali molli (totale) : 9; Raggi anali molli: 27 - 32; Vertebre: 30. This species is distinguished from its congeners, except T. anostomus, by the following characters: olfactory lamellae 11-17 (vs. 20-41); differs from T. anostomus, T. araguaiensis with gill rakers on lower limb 11-14 (vs. 17-20); differs from T. anostomus, T kuluene by having 2 distinct humeral marks (vs. 1); differs from T. ommatus by having maxillary teeth 1-4 (vs. 7-8) and by having a mark centered on the caudal peduncle (vs. mark on the posterior portion of the caudal peduncle); differs from T. rarus without dark stripes on the flank (vs. present); differs from T. georgiae, T. rarus by having 3.5 scale rows between lateral line and pelvic-fin origin (vs. 4.5-5.5); differs from T. argenteus by predorsal scales 7-9 (vs. 11-17); differs from T. denticulatus by having humeral marks separated by only one vertical scale row (vs. humeral marks separated by three vertical scale rows). differs from T. chalceus by dentary having thinner and sharper principal teeth (vs. more robust teeth) (Ref. 124043).

Life cycle and mating behavior Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

Silva, G.S.C., B.F. Melo, C. Oliveira and R.C. Benine, 2016. Revision of the South American genus Tetragonopterus Cuvier, 1816 (Teleostei: Characidae) with description of four new species. Zootaxa 4200(1):1-46. (Ref. 124043)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Least Concern (LC) ; Date assessed: 30 October 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

Informazioni ulteriori

Trophic ecology
Prede
Alimentazione
Consumo di cibo
Food rations
Predatori

Ecology
Ecologia

Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Reclutamento
Abbondanza

Life cycle
Riproduzione
Maturità
Maturity/Gills rel.
Fecundity
Deposizione
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Uova
Egg development
Larve
Dinamica popolazioni larvali

Distribution
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Aree FAO
Ecosystems
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Anatomy
Area branchiale
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Otolith

Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)

Genetics
Genetica
Heterozygosity
Ereditarietà

Human related
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Profili di acquacoltura
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Ciguatera cases
Stamps, coins, misc.

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References
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Fonti Internet

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.03311 (0.01690 - 0.06487), b=2.90 (2.73 - 3.07), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.2 ±0.4 se; based on size and trophs of closest relatives

Resilienza (Ref. 120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Tetragonopterus franciscoensis Silva, Melo, Oliveira & Benine, 2016